1. The torque about the axis of rotation through the elbow joint if the biceps and lower arm are perpendicular to each other, a. If the lower arm is35 lower with respect to the horizontal. Assume that the muscle is attached 5.0 cm from the elbow. b. What is the maximum torque exerted by a 50-kg physical therapy patient riding an exercise bike if the rider puts all his weight on each pedal? The pedals rotate in a circle of 14 cm radius.

2. The center of gravity of a 60-kg stroke patient is located at a 70-cm mark. If the patient is supported at 65 cm, where must an 80-kg object be hung in order to attain equilibrium?

3. The fulcrum of a seesaw 5 m long is located 2.0 m from one end. A person weighing 250 N sits on the long end. What must be the weight of a person sitting at the short end to balance the seesaw? Ignore the weight of the seesaw.